1428417204869 has 2 divisors, whose sum is σ = 1428417204870. Its totient is φ = 1428417204868.

The previous prime is 1428417204847. The next prime is 1428417204913. The reversal of 1428417204869 is 9684027148241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1189430172100 + 238987032769 = 1090610^2 + 488863^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1428417204869 is a prime.

It is a super-2 number, since 2×1428417204869² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428417204469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714208602434 + 714208602435.

It is an arithmetic number, because the mean of its divisors is an integer number (714208602435).

Almost surely, 2^{1428417204869} is an apocalyptic number.

It is an amenable number.

1428417204869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428417204869 is an equidigital number, since it uses as much as digits as its factorization.

1428417204869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 1428417204869 in words is "one trillion, four hundred twenty-eight billion, four hundred seventeen million, two hundred four thousand, eight hundred sixty-nine".